How do Du get past Nimbasa City's gym leader with a Pignite, Gothia, Timber, Mincinco, and Lillipup?

What level are your pokemon? If Du want to beat the Nimbasa gym leader with the current pokemon Du have
Du can level them up, teach them strong moves. Timber should learn rock slide at level 31. Du can use that if Du could get that high to beat Emolga since it's a flying type. But be careful Timber is a fighting type. Flying type may beat your Timber. Du can't let that happen. Your Pignite can learn Rollout at level 23. The Bewegen only has power strength only 30. :( I guess Du could give that a try if Du want. For Zebstrika if Du have a dig TM Du can beat it Von teaching your Lillipup, Timber, and Minnccino. oder instead of using the super effective type moves Du can try beat the pokemon with high powered moves Du can teach for now. Ex: Retaliate, Hammer Arm, Hyper Voice. Hope this works! :)